The scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.

出自-2017年6月听力原文

When the rats detect the smell, they stop and rub their legs to indicate a sample is infected.

2017年12月四级真题（第一套）阅读 Section A

Extracurricular activities reflect the differences in child rearing in the Pew survey, which was of a nationally representative sample of 1,807 parents.

出自-2017年6月阅读原文

My own research at the Stanford Center on Adolescence uses in-depth interviews with small samples of youngsters rather than large-scale surveys.

出自-2016年6月阅读原文

During commercials, an overlay will appear at the bottom of the screen, prompting viewers to press a button to request a free sample or order a catalogue.

出自-2016年6月阅读原文

But this third group was not only unexpected, it was so distinct and so large—nearly one third of our sample—that it became a key finding of the study.

出自-2016年12月阅读原文

To test the polluting power of fulmars, researchers collected samples of deposit from eleven ponds on Devon Island.

出自-2016年12月听力原文

In the 1930s,when only one in 10 Americans had a degree from a four-year college, an admissions committee was content to ask for a sample of applicants'chool papers to assess their writing ability

出自-2013年12月阅读原文

In the old days, applicants only had to submit a sample of their school papers to show their writing ability

出自-2013年12月阅读原文

Within samples collected from the solid substances lying beneath the ice.

出自-2010年12月听力原文

Critics also argue that commercial genetic testing is only as good as the reference collections to which a sample is compared.

出自-2009年考研阅读原文

Surveys and test samples have also become important for understanding the larger landscapes that contain archaeological sites.

出自-2014年考研阅读原文

How do archaeologists know where to find what they are looking for when there is nothing visible on the surface of the ground? Typically, they survey and sample ( ' , make test excavations on) large areas of terrain to determine where excavation will yield useful information.

出自-2014年考研阅读原文

Typically, they survey and sample large areas of terrain to determine where excavation will yield useful information.

2014年考研真题（英语一）阅读理解 Section Ⅱ